Locomotive-superheater.



J. PRINIROSE.

LOCOIVIOTIVE SUPERHEATER.

APPLICATION FILED AuG.5. 1914.

l 9 l 52.839, Patented Sept. 7, 1915.

2 SHEETS-SHEET l.

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J. PRHVIROSEs LOCOMOTVE SUPERHEATER.

APPLICATION FILED Aue.5. 1914.

Patented Sept. 7, 1915.

2 SHEETS-SHEET 2.

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'f ,lerares rnc, nr e ich.

JOHN PRIMRosE, .or NEW YORK; N'. Y;

- .LocomotivesUPERHEATER.

messes.

To all' wtoms it concern i Be it iknown that LJOHN siding yat -New York, win the :county and State vtof yN ew Yorin/:have invented certainl new :and mseful Improvements lfin Loco1no--` tive-:Superheaters, `of which the following is a full, clear, and yexact description.

The `invention rwhioh constitutes the subjectmatter ofathis application .relatesitoany improvement'insuperheaterS, and has toldo partieulalywith :the type of2superheater in which the individual junits 'or elements are projected lrearwardly :from the fsmokefbox into the /iretnbes of the .locomotive orA other boiler.

The invention resides .more particularly in .the novel f arrangement i of :the :header and elements `:so ethat 'one superheating unitj lor element,.although `its end portions ybe ksubstantiallybehind other end port1ons,may be individually removed `forprepairkor yreplacement without .necessarily removing any of theotherfunits.

'In the adrawings,` F igurel is a longitudinalrseetion of inydeviee :illustratingthe relation @ofthe superheater to the 4smoke-box, fireztubeand tubesheet oflthefboiler. Fig. `2 isa yfront view of the device ytaken substantially onfthe` 1ine12-21of Fig. l. Fig. Slis a top'iplan .viewin section of the header illustrating fthe fconn'ection between the :header and superheating units, yand 'taken substantially on .the'line 3-3 of Fig. Figs 4. and f5 serve to illustrate views, rsimilar to Figs.l I1 and .2, of an alternative construey tion..

\ box 12,1tube sheet 13* and dry y.pipe 14. "The superheater comprises a saturated steam header' llinto which thedry pipe `14:l dis charges, thelsupeheated steam header 16,

and the `superheating .elements or units'y which project rearwardly into-theliire tubes 1&1` .and the inlet and outlet 'ends i of which are expanded respectively into 'the .inlet and outlet headers iland E16@ The fire ytubes :are arranged Ein vertical and horizontal' `rows ;as fisfusnal iny 7'fboiler construction, butjonly the supper `ifour fhorizontal rows 'arentilized, so far as the :pres-` Specication of Letters `Iatent.

`Referi-ingzto thedrawings in detail, andl PatentedSept. 7,1915.

, tappneatiomieaauguste,1914.? serianno. 855,081.l

y l sentfdrawingsareconeerned, to'elueidateftheanalicen, a` subject y.of :the King of :Great Britain, re-

principles offni'y irvention.`

vIn orderto explain :theinvention Ia-show 1n .,Fig'. .2;three gvertical,rowsbf .fire `tubes and of` eourseacorresponding numbery of superheaternnits, and` aportiongof .thela'tter I designa-teas Af, B, 0,1), E, ,-G andH. Seel particularly Fig. 3, :It will ybe obvious that ian understanding'of v(how to remove all fthe units 'i of one fvertical, .row will :makek it clear l how .to -removeione or more units .of other .vertical rows, and an v.explanation A.of thegmethod of :removing the .elements will suiiice to explain .the arrangement whereby such removal may lbeaceomplishedf It Vwill alsokfbe lunderstood lthat ,units E .and .F 4of one of 1 the .vertical rows :correspond to Yunits A and vI()ofanadjacent row, and that units Gr and 'correspond .to `unit-s ,B .andD

Tofyreniove yunit B `(assumingthe others -to vbegin position) disconnect the' ends thereof from fthe headers, turn said yends kslightly .to the vleft sothat aunit I1D will notbein its path,`,andwithdraw between C andiD. To remove l C( assuming the other unitsfto; be .in positionwdiseonnect the ends .thereof fromy the' .-headers, -turn.the @rear A:end .thereof slightly -to fthe .left and? withdraw lthis end between the l.ends of ,units Aend G, which are connected .to they .superheatedV steam header. It will .be yseen that in `"this .case the endsf of this unit on 'the superheater .side are unobstructed. It will also be apparent that the rear end of this unitcannotfbeturned to the right because of ,the su, perheatedV end ofunit A. (Eo remove (assuming. :the cthersto be in position) 4)disconnect thefends thereof from the headers,- fturn the irear .end thereof `slightlynto .right and withdraw .this end jbetween y.theeends Aof :units B and which .are Aconnected to `the super-heated steam vheaiiler.` IAS .-inacase with unit .(1, (the a path or lane for the withdrawal 'of the upper units. In the case of the unit A, it is not necessary to have its ends bent outwardly because it is uppermost and as will be clearly apparent it could not obstruct any other unit by having its ends straight.y

It will be understood .of course that the' ends of the units A and C are spaced sufficiently far apart from B and'D to permit any end to pass between them; that is spaced aA distance equal'to or slightly greater than the external diameter of the. units.

From the foregoing it will be apparent that the end portions are located alternately on oppositev sides of a plane defined by the axes ofthe fire-tubes of each vertical row. In other words, one unit is inclinedoutwardly from one side of saidplane and the succeeding unit is inclined outwardly from the other side of said plane. Furthermore, when the units are removed from the header they are all laterally shifted and in view of this feature, coupled with the` fact `that a .pathway or lane 1s provided for their withdrawal as previously described, the end por- Y tions of the units on one side of said plane may be and preferably are located substantially in front of each other, resulting in great economy of space as compared with that type in which the end `portions are so arranged that they are normally out of each others path.

In Figs. t and 5 I show an alternative construction in which-the upwardly projecting end portions of theunits are expanded into the header chambers with the end portions of the upper two units A and C lying on one side of a vertical plane passing through the axis of said tube, and with the end portions of the `lower two units B and D lying on the opposite sides of said plane, and with the said portions on either side lying in front of one another. The construction yand arrangement shown in Figs.

4 and 5 is such that any unit can be removed from the boiler independently of the others. The lettering of the superheating units is such that the description of Figs. 1 to 3 inclusive is applicable to this alternative construction.

What I claim is: 1. The'combination ywith a boiler having a plurality of fire-tubes arranged one above another in substantially the same verticalplane, of a header provided with steam chambers, andl superheater units arranged in the fire-tubes and having upwardly projecting end portions which are expanded into said chambers, the end portions of the upper units beingl the end portions of the lower units, and any of said units adaptedV to be removed from the boiler independently of the others.

2. The combination withY a boiler having ya. plurality offire-tubes arranged one above located substantially behind 'p another in the same vertical plane, of a header provided with steam chambers, and superheater units projecting rearwardly into the fire-tubes and having upwardly projecting end portions which are expanded into said chambers with the end portions of alternate units lying on opposite .sides of a. plane passing through the axes of said tubes, and with thefsaid portions on either side lying in front of one another, said end porv tions of any unit Vadapted to be shifted laterally so that any unit can be removedA from the boiler independently of the others. i

3. The combination with a boiler having a plurality of re tubes arranged one above another in the r'same vertical plane, of a header provided with steam chambers, and superhea-ting units projecting rearwardly into the fire tubes and having upwardlyr projecting end portions expanded into said chambers substantially in lateral rows, some of the end portions of said rows being located behind and spaced laterally from each other at least a distance equal to the external diameter of said end portions whereby any of said units may be removed independently of the others.

A. The combination with a boiler having a plurality of lire tubes arranged `one above another-'in the same vertical plane,rofa header provided with steam chamberskandl superheating units projecting rearwardly into the iire tubes and having upwardly projecting end portionsy expanded into said chambers, said end portions located alternately on the opposite sides of a plane passing through the axes of said-fire tubes, said end portions on either side located substantially behind one another and the portions on one side being suiificiently spaced from the portions on the other side to permit any of said` portions to be laterally shifted, whereby any one` of said units may be removed independently of the others.

5. The combination with a boiler having a plurality of fire tubes arranged one above Y another in the same vertical plane, of a header provided with steam chambers, and

superheating units projecting rearwardlyl into the lire tubes and having upwardly projecting end portions expanded into said chambers, said end portions located alternately on the opposite sides of a plane passing through the axes of saidL re tubes, the end portions on either side located substantially behind each other, but capable of being laterally shifted whereby any unit is independently removable. r

6. The combination with a boiler having iire tubes arranged in horizontal and vertical rows, each of the vertical rows comprising at least four firek tubes, of a header provided with steam chambers, and super-4 heater units arranged in the re tubes and. having upwardlyprojecting end portionsv cated substantially behind the end portions of the lower units, and any of said units adapted to be removed from the boiler independently of the others.

7, The combination of a boiler having a plurality of fire tubes arranged in horizontal and vertical rows, each of the vertical rows comprising at least four fire tubes, of a header provided with steam chambers, and super-heater units projecting rearwardly into the fire-tubes and having upwardly projecting end portions which are expanded into said chambers with the end portions of alternate units lying on opposite sides of a c plane passing through the axes of said tubes, and with the said portions on either side lying in front of one another, said end portions of any unit adapted to be shifted laterally so that any unit can be removed from the boiler independently of the others.

8. The combination with a boiler having a plurality fire tubes arranged in horizontal and vertical rows, each of the vertical rows comprising at least four tubes, of a header provided with steam chambers, andv super-heating units projecting rearwardly into the fire tubes and having upwardly projecting end portions expanded into said chambers substantially ink lateral rows, some of the end portions of said rows being located behind and spaced laterally from eachy other at least a distance equal to the external diameter of said end portions whereby any of said units may be removed independently of the others.

9. The combination with a boiler having tal and vertical rows, each of the vertical rows comprising at least four fire tubes, of a header provided with steam chambers and superheating units projecting rearwardly into the ire tubes and having upwardly projecting end portions expanded into said chambers, said end portions located alternately on the opposite sides of a plane passing through the axes of said fire tubes, said end portions on either side located substantially behind one another and the portions on one side being sufficiently spaced `from the portions on the other side to permit any of said portions to be laterally shifted, whereby any one of said units may be removed independently of the others. l0. The combination with a boiler having a plurality of fire tubes arranged in horizontal and vertical rows, each of the vertical rows comprising at least four fire tubes, of a header provided with steam chambers and superheating units projecting rearwardly into the re tubes and having upwardly projecting end portions expanded into said chambers, said end portions located alternately on the opposite sides of a plane passing through the axes of said fire tubes, the end portions on either side located substantially behind e'ach other, but capable of being laterally shifted whereby any unit is independently removable.

In testimony whereof I affix my signature in the presence of two subscribing witnesses.

JOHN PRIMROSE. itnesses THOMAS J. BYRNE, WM. BOHLIBER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

a plurality of fire tubes arranged in horizon- 

